This endpoint is available on the following API plans：

Plans	Hobbyist	Startup	Standard	Professional	Enterprise
Available	✅	✅	✅	✅	✅
interval Limit	`>=4h`	`>=30m`	No Limit	No Limit	No Limit

Response Data

{
  "code": "0",
  "msg": "success",
  "data": [
    {
      "time": 2644845344000, // Timestamp (ms)
      "open": "2644845344",   // Open interest at interval start
      "high": "2692643311",   // Highest open interest during interval
      "low": "2576975597",    // Lowest open interest during interval
      "close": "2608846475"   // Open interest at interval end
    },
    {
      "time": 2608846475000, // Timestamp (ms)
      "open": "2608846475",  // Open interest at interval start
      "high": "2620807645",  // Highest open interest during interval
      "low": "2327236202",   // Lowest open interest during interval
      "close": "2340177420"  // Open interest at interval end
    },
    ....
  ]
}